filestore-to-bluestore: do not use --destroy

Do not use `--destroy` when zapping a device.
Otherwise, it destroys VGs while they are still needed to redeploy the
OSDs.

Signed-off-by: Guillaume Abrioux <gabrioux@redhat.com>

infrastructure-playbooks/filestore-to-bluestore.yml

@@ -163,6 +163,7 @@
           ceph_volume:
             action: "zap"
             osd_fsid: "{{ item }}"
+            destroy: False
           environment:
             CEPH_VOLUME_DEBUG: 1
             CEPH_CONTAINER_IMAGE: "{{ ceph_docker_registry + '/' + ceph_docker_image + ':' + ceph_docker_image_tag if containerized_deployment else None }}"